fix: Incorrect bounding box for sprites with non-default Center

[w0wca7a]

PR Details

When a sprite's pivot is offset from the geometric center of the texture (e.g. anchoring the sprite to its bottom edge so it sits on the ground), the sprite is rendered visually shifted relative to the entity's position — but the bounding box used for frustum culling stays centered on the entity itself.

Related Issue

fixes: #3227

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.